Windmill



M. BERDAN. Windmill.

No. 225,554.; Patented Mar. 16, 1880.

Avenior 957m rum-umoenmm WASHINGTON D. C.

I UNITED ST TES PATENT OFFICE.

MARVIN BERDAN, OF PLYMOUTH, MICHIGAN.

WINDMILL.

SPECIFICATION" forming part of Letters Patent No. 225,554, dated March 16, 1880. I Application filed January 8, 1880.

To all whom it may concern Be it known that I, MARVIN BERDAN, of Plymouth, in the county of Wayne and State of Michigan, have invented an Improvement in Windmills, of which the following is a specification.

My invention relates to improvements in windmills and it consists in the peculiar devices shown and described whereby the tailvane is thrown out of the wind at the will of the operator; also, in the combination of the above devices with a counterbalance-weight and a hinged tail-vane, whereby said vane'is compelled into the wind, and is held there against the usual side strain of the wheel or sails, as more fully hereinafter described.

Figure l is a perspective, showing a hinged tail-vane, head, and turntable of a windmill with my improved devices attached, said vane being shown as when the millis in operation. Fig. 2 is a detached view of the double crank. Fig. 3 is a vertical section through one of the studs on the head, showing the pin upon which the frictionroller revolves.

I In the accompanying drawings, which form a part of this specification, A represents the revolving head of a windmill, to which the wheel or sails (not shown) are secured in the ordinary way by the shaft B, and to which also the vane G is hinged, such head being of the ordinary construction, except that it is provided with one or more hollow studs, a, cast or rigidly secured to said head. Within these studs are secured, in any convenient manner, the pins b, each carrying on its lower end a friction-wheel, c, projecting below the lower face of the head, to bear against the face of the turn-table D.

Projecting above the head A is an arm, d, in the top of which is journaled a small pulley, over which passes a chain or cord, 6, one end of the same passing through the head downward within reach of the operator, while the other end of said-chain or cord is secured to one of the cranks, h, of the doublecrank shaft t, which is suitably journaled in rear of the head. To the other of these cranks, k, the tailvane is secured by means of another chain, 1. By these means, as the tail-vane is hinged or pivotally connected with the head, said vane is thrown out of the wind at the will of the operator by pulling upon the chain or cord.

.tion of the wheel.

E is a counterbalance attached to a chain or cord which passes over a pulley, m, carried at the extremity of an arm, n, which is secured to the head. This cord is secured at its opposite end to the tail-vane, as shown. This weightperforms three functions, to wit When the chain or cord e, by which and the double crank-shaft the vane is thrown out of the wind, is released this weight instantly compels the vane into the wind again. The sails of the wind-wheel (not shown) are always presented diagonally to the wind when in operation. This has a tendency to throw the wheel to one side, a little out of line with the tail-vane, thereby interfering with the regularity of mo- This weight will compel the tail-vane and wind-wheel to retain their relative positions when in operation, thereby securing great steadiness of motion. The third function performed by this weight is that when the tail-vane is thrown out of the wind the weight of the wind-wheel is partially, if not wholly, balanced by said counter-balance, thereby relieving wear and strain upon the pivotal connection between the head and turntable.

By my construction the lever h is always directly in front of the pulley, whereby side draft is avoided and there is no liability of the rope sliding off the pulley.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a wind-wheel and in combination with a hinged tail-vane, O, the chain c, passing over a pulley in an arm, (I, cranks 11. k on shaft 1', pivotally connected with the head A, and the chain 1, arranged and operating as set forth, whereby side draft on the pulley is avoided, substantially as described.

2.The combination of a hinged tail-vane, 0, chain a, passing over a pulley in the arm 01, cranks h k on shaft 41, pivotally attached to the head A, and chain l, whereby side draft on the pulley is avoided, with the counterbalanceweight E, attached to a cord passing over the pulley m on the end of an arm, n, secured to the headf'substantially as described, and for the purpose set forth.

' MARVIN BERDAN. Witnesses:

(humans J. HUNT, H. S. SPRAGUE. 

